Vacuum cleaner



* OCt- 26, 14943. w. LEATHERS 2,333,017

VACUUM CLEANER original Filed oci. 17, 1959 n`forLreducingfrecirculation;Ll i

Patented Oct. 26, 1943 I i A -Wardf `Leathers;p lvlfooklyn, Y assignerto t Y l Quadrex Corporation, New York,- N. leanery 299,819;v "'Dividedrand thissapplication Novem-CFL ttf;

ber 7, 1941, Serial'No. 418,201! if: r t I i i .I n L mana lOl-23Min o,t Y --Myiinventonpertains particularly to portable and' receives thear.at a Ypoint between the verticali-airis. canister-type `vacuum#cleanersof blades `and theV motor. By this arrangement the ltl'ie'typealso shownfin my co-pending applicamotor'is` 'keptscooL 'the .air is gotten intothe tionsiforaLettershPatent, `Serial"Nos.v299,819 and fan withlittleiresistance, and thexv/idest di- 209-,909.uThis-applicationisafdivision of-appli- `5 ameter fan may be`usedconsistent with a cationiSerial No.V 299,819,` leii` October 17; `1939,stepped-up E.1M.-\F., Lthusrobtaining a 'high-ca- -for Yerticalaxiscanister typeivacuumcleaner. pacity performance' without increasingbulkand ,oirAnibjectfofmy'invention is to reduce weight weight. i t Y ii and ebulkior the machine' by "disposingtth'e motor;v-.."3Adja.cent'the' tipsoi' the fan 20 isa continu suctionfunitwithinthe inneriportionof the'lter 10 ousring ofreaction ordeflectorbladesZI.` These and-.alargefdiameter single stageTfanl-imm'edi may be :provided1 ifvdesiredVin sections,' suchas-atel'ywabove ",thefilter; a further object"being shownzin lil'guie 2;and riveted to a cross plate tofzaobtain thshighest suctionvvolume ratioby 22vwhich has poripheraliopen'ings 23 for the free meanswof the`arrangement ijustmentionedtoflow of airfrom the blower to the upperportion Agetherzwithasries ofxedireactionblades clo'se- 15offthetcleanerffroInWhiChitisiexhausted. These -ly'lrshroudingthertip'sofithe `blades "ofi they fan reaction bladesiare'numerous'andiclose together.

They greatly reduce `recirculation and thus great'- vv -T'Izh'avehereinafter l'setffinth my invention lso ly"`1ncreasesuction.l1 Thosevfamiliar with these those' familiar with these arts may-understandartsknow that`=when thecleaningmozzlelisltighta 1t',\andqhaveappended=drawlng,-ff!vvhich: fg? 2o ly held against'anapped surface thehighest'suc- "Figure f1# is a partially broken-"away and fa tion isd'esired, theV highest-beingobtained by partially cross-sectioned 'viewof"` my cleaner t' the mu-ltiplestagecompressor;Y But when 'the showingmotor-suctionfunitfand deector blades. IiOZZleS required tO'fdO moreOpen Cleaning the Figure 2 is a section of the ring of reactionplargestvolumei-is desired,fthe highest being ob- `bladesWhicli'fsrruri'ds the fan ofthe motor-suc- `25 tained-*With`.Sin@iti-Stage, y"high-tiD-SpeedI `fahtion-unit. i Volume and suctionbeing reciprocals of each A main shell I is disposed immediately aboveother, and eaCh being highls7 desirable on occaa, dirt-receptacle 2which has a connection 3 for sion, the present invention Serves theimportant the cleaning hose. Within the main shell I purpose ofproviding highly desirable characteris a ltering mechanism 4 andmotor-suction- 39 istics for all kinds of cleaning at the end of theunit 5. Above the shell I is a housing 6 which hOSer supports a,bail-handle 1. A 1tor shaker han- The invention is not to be limited tothe exact dle 8 disposed on the side of the main shell I arrangement 0fDarts ShOWh in the aCCOmDahyis held by a horizontal hinge 9 to aninternaI ing drawing or described in this Specification as bow I0, Thebow is tmunnjoned to a ring e.) Various changes in the details ofconstruction both of which are preferably made of clockmay beiresortedto without departing from the spring-strip. r spirit of the invention.While the invention has i In order to provide ample space for large-ca-I been described in connection with a portable verpacity lter in amachine of minimum bulk (and tical axis canister type VaCIlU-m-Cleaner7it iS 0bweight) itis desirabIe to place the motor 5 with- 40 vious thatthe same is applicable to horizontal in thecone apex I1 and to dispose'the cenaxis type vacuum-Cleaners- ThilS, While throughtrifugal fan forthe same immediately above it. out the specification and claims of thisappli- For high-capacity purposes 1 prefer to use a, sincation referencehas been made to a vvertical glo-stage fan 20 of generous diameter inconaxis vacuum-cleaner it is obvious that the enjunction with a seriesof reactionbhdos 2|, the tire unit comprising the present inventionmight object being that of obtaining far greater volwell be turned uponits Side S0 that theaXS 0f Aurne air-now than with the conventionalmulthe same extended in a horizontal direction. It

tiple stage compressors Common to presentday is Within the scope of thepresent invention to horizontal-axis canister-type vacuum-cleaners. S0mOdify the unit. In order to obtain such a desirable arrange- 50 What Iclaim is:

ment Ihave devised means whereby the air from 1- In aVaCllUlIIl-Cleahel, a Circular fan Casing the clean side of the liltermay be passed through providing a fan Chamber `and having OPPOSed the11101301' frame and thence into the eye of the central air inlet andoutlet openings, a disc-andfan. The fan has a substantially disc-likeface blade fan mounted Within the Casing fOr Totaat the outboard end ofthe `motor drive Shaft 55 tion about the axis of the casing, said fan including a substantially hat disc having a plurality of radiallyextending vanes extending outwardly therefrom, said casing being formedwith a wall in close proximity to the outer radial edges of the vanesand substantially coextensive `therewith, a fixed spider-like crossplate disposed in said chamber adjacent the disc and `having airpassages extending therethrougnand a plurality of deilector blades inthe peripheral regions of said cross plate at spaced points therearound,

said plates occupying substantially radial planes g Within the chamberand having their inner edges substantially coextensive with the outeredges of f the vanes and positioned in closeproximity thereto throughoutthe entire extent thereof.

edges of said blades being in close proximity to the'v sweep of theouter edges of said vanes, said 2. In a vacuum-cleaner, a circular fancasing l providing a fan chamber-having a Acentral ,air

inlet at its bottom and an air outlet at its top, l

a disc-and-blade fan mounted within the casing for rotation about avertical axis, said'fan in-J cluding. a substantially flat dischaving 1aplurality ofV radially extending 'vvanes depending therefrom;4 saidcasing being provided with a downwardly sloping bottomwall nclose proxiimityA to therlower radial edgesy ofthe vanes and substantiallycoextensive'therewith, a fixed spider-likecross plate disposed in saidchamber irnmediately above the disc and havingl air passages extendingtherethrough andya ring-like de-v flector blade unitsecured to saidcross plate in the peripheral regions thereof, and having a plurality ofdeflector blades depending therefrom, said deflector blades lyingoutsidethe "circumy ferential sweep of said vanes and in close proximity tovthe outer edges ofthe said vanes and being. substantially radiallydisposed in the-,chamber.

3'. Ina vacuum-cleaner, arcircular fan casing providing a fan ,chambervhaving a central-air inlet at its bottom and an air outlet, avdisc-andbladefan mounted for rotation Within thecasing about a verticalaxis, said-fan including fa substantially fiat disc havinga pluralityvof radially extending vanes depending therefrom, .said vanes projectingvoutwardly beyond the periphery blades being relatively small and invclose proximity to each other thus defining therebetween Aa relativelylarge number of small pressure chambers.

4. In a vacuum-cleaner, a circular fan casing providing a fan chamberhaving a central air in- -letatlts bottom and an airv outlet,A adisc-andblade fan mounted for rotation within the casing about avertical axis, said fan including a substantially flat disc having aplurality of radially extending 'variesl dependingtherefrom, said vanesprojecting outwardlyvbeyondV the periphery vof the Vdisc within thechamber, said'casing be'.-

` ing formed with a downwardly` sloping bottom .wall-in close proximityto the lower radial `edges of the vanes and substantially coextensivetherewith, a fixed spider-likevcross plate disposed in said casingimmediately alcoveA the disc and having air passages extendingtherethrough, a ringlike deflector blade unit secured to the peripheralregionsV of said cross plate, a -plurality of-outjwardly struckdeflectorblades ron said unitwdepending downwardly therefrom f in:V`closeproximity to the outer edge of said disc, said blades beingsubstantially radially disposed within the casing and having their inneredges `arranged-in close proximity lto the circumferential sweep of saidblades and defining relatively smally pres- 1sure `chamberstherebetween.

WAPLD TQEATHERS.' v

